# Compute maximum PRF advantage

Hello all, I'm new to crypto, I'm not sure if my thought process is correct ? any assistance will be helpful.

How useful is the partial info that A gets from (a), (b), and (c) ; in (c) A can determine Fn. How useful is this partial info in distinguishing F from a Rand Func

I understand that the advantage is the P ( Real) - P ( Rand). and in the first instance where the key is 000, each query that A makes returns the same output as the input. So the adversary will guess that they are in the real world since input and output matches

So does that mean the advantage is: 1 - (2^-3) ??

So does that mean the advantage is: $1 - (2^{-3})$ ??